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Silence assorted "variable may be used uninitialized" warnings.

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All of these are false positives, but in each case a fair amount of
analysis is needed to see that, and it's not too surprising that not all
compilers are smart enough.  (In particular, in the logtape.c case, a
compiler lacking the knowledge provided by the Assert would almost surely
complain, so that this warning will be seen in any non-assert build.)

Some of these are of long standing while others are pretty recent,
but it only seems worth fixing them in HEAD.

Jaime Casanova, tweaked a bit by me

Discussion: https://postgr.es/m/CAJGNTeMcYAMJdPAom52dppLMtF-UnEZi0dooj==75OEv1EoBZA@mail.gmail.com
This commit is contained in:
Tom Lane
2018-02-14 16:06:49 -05:00
parent 0c62356cc8
commit 9a725f7b5c
4 changed files with 8 additions and 5 deletions
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2
src/backend/access/transam/xloginsert.c
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@ -584,7 +584,7 @@ XLogRecordAssemble(RmgrId rmid, uint8 info,
if (include_image)
{
Page page = regbuf->page;
uint16 compressed_len;
uint16 compressed_len = 0;
/*
* The page needs to be backed up, so calculate its hole length